rtpnego: Ignore ptime/maxptime when copying the CodecAssociation
rtpnego: Ignore ptime/maxptime when copying the CodecAssociation

The maxptime in the CodecAssociation only comes from the remote side, not
from the local one.

kakaroto/farstream,tieto/farstream,pexip/farstream,ahmedammar/skype_farsight2,ahmedammar/skype_farsight2,tieto/farstream,tieto/farstream,shadeslayer/farstream,tieto/farstream,kakaroto/farstream,ahmedammar/skype_farsight2,pexip/farstream,shadeslayer/farstream,tieto/farstream,ahmedammar/skype_farsight2,pexip/farstream,kakaroto/farstream,shadeslayer/farstream,kakaroto/farstream,shadeslayer/farstream,pexip/farstream